|
|
PDF AMIS-41682 Data sheet ( Hoja de datos )
| Número de pieza | AMIS-41682 | |
| Descripción | Fault Tolerant CAN Transceiver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AMIS-41682 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
AMIS-41682, AMIS-41683
www.DataSheet4U.com
Fault Tolerant CAN
Transceiver
Description
The new AMIS−41682 and AMIS−41683 are interfaces between the
protocol controller and the physical wires of the bus lines in a control
area network (CAN). AMIS−41683 is identical to the AMIS−41682
but has a true 3.3 V digital interface to the CAN controller. The device
provides differential transmit capability but will switch in error
conditions to a single−wire transmitter and/or receiver. Initially it will
be used for low speed applications, up to 125 kB, in passenger cars.
Both AMIS−41682 and AMIS−41683 are implemented in I2T100
technology enabling both high−voltage analog circuitry and digital
functionality to co−exist on the same chip.
These products consolidate the expertise of ON Semiconductor for
in−car multiplex transceivers and support together with
0REMX−002−XTP (VAN), AMIS−30660 and AMIS−30663 (CAN
high speed) and AMIS−30600 (LIN) another widely used physical
layer.
http://onsemi.com
PIN ASSIGNMENT
INH 1
TxD 2
RxD 3
ERR 4
STB 5
14 VBAT
13 GND
12 CANL
11 CANH
10 VCC
Features
• Fully Compatible with ISO11898−3 Standard
EN 6
9 RTL
• Optimized for In−Car Low−speed Communication
♦ Baud Rate up to 125 kB
WAKE 7
8 RTH
♦ Up to 32 Nodes can be Connected
♦ Due to Built−in Slope Control function and a very Good Matching
of the CANL and CANH bus outputs, this device realizes a very
low electromagnetic emission (EME)
♦ Fully Integrated Receiver Filters
(Top View) PC20041029.1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
♦ Permanent Dominant Monitoring of Transmit Data Input
♦ Differential Receiver with Wide Common−Mode
Range for High Electromagnetic Susceptibility
(EMS) in Normal− and Low−Power Modes
♦ True 3.3 V Digital I/O Interface to CAN Controller
for AMIS−41683 Only
• Management in Case of Bus Failure
• Protection Issues
♦ Short Circuit Proof to Battery and Ground
♦ Thermal Protection
♦ The Bus Lines are Protected Against Transients in
an Automotive Environment
♦ An Unpowered Node Does not Disturb the
♦ In the Event of Bus Failures, Automatic Switching
Bus Lines
to Single−Wire Mode, even when the CANH Bus
Wire is Short−Circuited to VCC
♦ The Device will Automatically Reset to Differential
Mode if the Bus Failure is Removed
♦ During Failure Modes There is Full Wake−up
Capability
♦ Unpowered Nodes do not Disturb Bus Lines
♦ Bus Errors and Thermal Shutdown Activation is
Flagged on ERR Pin
• Support for Low Power Modes
♦ Low Current Sleep and Standby Mode with
Wake−up via the Bus Lines
♦ Power−on Flag on the Output
♦ Two−Edge Sensitive Wake−up Input Signal via
Pin WAKE
• I/Os
♦ The unpowered chip cannot be parasitically supplied
either from digital inputs or from digital outputs
• These are Pb−Free Devices*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2010
June, 2010 − Rev. 8
1
Publication Order Number:
AMIS−41682/D
1 page  
AMIS−41682, AMIS−41683
FUNCTIONAL DESCRIPTION
www.DataSheet4U.com
Description
AMIS−41682 is a fault tolerant CAN transceiver which
works as an interface between the CAN protocol controller
and the physical wires of the CAN bus (see Figure 2). It is
primarily intended for low speed applications, up to 125 kB,
in passenger cars. The device provides differential transmit
capability to the CAN bus and differential receive capability
to the CAN controller.
The AMIS−41683 has open−drain outputs (RXD and
ERR Pins), which allow the user to use external pullup
resistors to the required supply voltage; this can be 5 V or
3.3 V.
To reduce EME, the rise and fall slope are limited.
Together with matched CANL and CANH output stages,
this allows the use of an unshielded twisted pair or a parallel
pair of wires for the bus lines.
The failure detection logic automatically selects a suitable
transmission mode, differential or single−wire transmission.
Together with the transmission mode, the failure detector
will configure the output stages in such a way that excessive
currents are avoided and the circuit returns to normal
operation when the error is removed.
A high common−mode range for the differential receiver
guarantees reception under worst case conditions and
together with the integrated filter the circuit realizes an
excellent immunity against EMS. The receivers connected
to pins CANH and CANL have threshold voltages that
ensure a maximum noise margin in single−wire mode.
A timer has been integrated at Pin TXD. This timer
prevents the AMIS−41682 from driving the bus lines to a
permanent dominant state.
Failure Detector
The failure detector is fully active in the normal operating
mode. After the detection of a single bus failure the detector
switches to the appropriate mode. The different wiring
failures are depicted in Figure 4. The figure also indicates
the effect of the different wiring failures on the transmitter
and the receiver. The detection circuit itself is not depicted.
The differential receiver threshold voltage is typically set
at 3 V (VCC = 5 V). This ensures correct reception with a
noise margin as high as possible in the normal operating
mode and in the event of failures 1, 2, 4, and 6a. These
failures, or recovery from them, do not destroy ongoing
transmissions. During the failure, reception is still done by
the differential receiver and the transmitter stays fully
active.
To avoid false triggering by external RF influences the
single−wire modes are activated after a certain delay time.
When the bus failure disappears for another time delay, the
transceiver switches back to the differential mode. When
one of the bus failures 3, 5, 6, 6a, and 7 is detected, the
defective bus wire is disabled by switching off the affected
bus termination and the respective output stage. A wake−up
from sleep mode via the bus is possible either by way of a
dominant CANH or CANL line. This ensures that a
wake−up is possible even if one of the failures 1 to 7 occurs.
If any of the wiring failure occurs, the output signal on pin
ERR will become low. On error recovery, the output signal
on pin ERR will become high again.
During all single−wire transmissions, the EMC
performance (both immunity and emission) is worse than in
the differential mode. The integrated receiver filters
suppress any HF noise induced into the bus wires. The
cut−off frequency of these filters is a compromise between
propagation delay and HF suppression. In the single−wire
mode, LF noise cannot be distinguished from the required
signal.
http://onsemi.com
5
5 Page 
AMIS−41682, AMIS−41683
www.DataSheet4U.com
Table 9. TIMING CHARACTERISTICS AMIS−4168x VCC = 4.75 V to 5.25 V, VBAT = 5 V to 27 V, VSTB = VCC, TJ = −40°C to
+150°C; unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max Unit
tt(r−d)
CANL and CANH Output
Transition Time for
Recessive−to−Dominant
10 to 90%;
C1 = 10 nF; C2 = 0; R1 = 125 W (See Figure 6)
0.35 0.60
1.4
ms
tt(d−r)
CANL and CANH Output
Transition Time for
Dominant−to−Recessive
10 to 90%;
C1 = 1 nF; C2 = 0; R1 = 125 W (See Figure 6)
0.2 0.3 0.7 ms
tPD(L)
Propagation Delay TXD to
RXD (LOW)
No Failures
C1 = 1 nF; C2 = 0; R1 = 125 W
C1 = C2 = 3.3 nF; R1 = 125 W
ms
0.75 1.5
1.4 2.1
Failures 1, 2, 5, and 6a (See Figures 4 and 6)
ms
1.2 1.9
1.4 2.1
Failures 3, 3a, 4, 6, and 7 (See Figures 4 and 6)
C1 = 1 nF; C2 = 0; R1 = 125 W C1 = C2 = 3.3 nF;
R1 = 125 W
C1 = 1 nF; C2 = 0; R1 = 125 W
C1 = C2 = 3.3nF; R1 = 125 W
ms
1.2 1.9
1.5 2.2
tPD(H)
Propagation Delay TXD to
RXD (HIGH)
No Failures
C1 = 1 nF; C2 = 0; R1 = 125 W
C1 = C2 = 3.3nF; R1 = 125 W
ms
0.75 1.5
2.5 3.0
Failures 1, 2, 5, and 6a (See Figures 4 and 6)
C1 = 1nF; C2 = 0; R1 = 125 W
C1 = C2 = 3.3nF; R1 = 125 W
ms
1.2 1.9
2.5 3.0
Failures 3, 3a, 4, 6, and 7 (See Figures 4 and 6)
C1 = 1 nF; C2 = 0; R1 = 125 W
C1 = C2 = 3.3 nF; R1 = 125 W
ms
1.2 1.9
1.5 2.2
tCANH(min)
Minimum Dominant Time for
Wake−up on Pin CANH
Low Power Modes; VBAT = 12 V
7 38 ms
tCANL(min)
Minimum Dominant Time for
Wake−up on Pin CANL
Low Power Modes; VBAT = 12 V
7 38 ms
tdet Failure Detection Time Normal Mode
Failure 3 and 3a
Failure 4, 6 and 7
ms
1.6 8.0
0.3 1.6
Low Power Modes; VBAT = 12 V
Failure 3 and 3a
Failure 4 and 7
ms
1.6 8.0
0.1 1.6
trec Failure Recovery Time Normal Mode
Failure 3 and 3a
Failure 4 and 7
Failure 6
LFoawiluPreosw3e,r3Ma,o4d,eas;nVdB7AT = 12 V
0.3 1.6 ms
7 38 ms
125 750 ms
0.3 1.6 ms
Dpc
Pulse−Count Difference
Normal Mode and Failures 1, 2, 4, and 6a
Between CANH and CANL
Failure Detection (Pin ERR becomes LOW)
Failure Recovery (Pin ERR becomes HIGH)
−
4
4
http://onsemi.com
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AMIS-41682.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AMIS-41682 | Fault Tolerant CAN Transceiver | ON Semiconductor |
| AMIS-41683 | Fault Tolerant CAN Transceiver | ON Semiconductor |
| AMIS-4168X | Fault Tolerant CAN Transceiver |  AMI SEMICONDUCTOR |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |